SVG
Prince supports a rich subset of SVG 1.1, including basic shapes, paths,
text and transformations. All svg elements are treated as replaced
elements, similar to img elements in XHTML, and their content is
rendered in a rectangular space. No line breaks or page breaks are made
within an svg element.
(Note that Prince does not support gradients, opacity or filters; see the
SVG documentation for details of which elements
are supported).

Any other XML
No default style sheets will be used, so style sheets will need to be
specified by the user or referenced from the document in order for Prince
to apply style to the document.